What Is Lattice Structure Additive Manufacturing, and Why It Matters?

What Is Lattice Structure AM?

Let’s start with the basics to avoid confusion. Lattice structure additive manufacturing (AM) uses 3D printing to make parts with a grid-like, connected framework. Think of the inside of a bone or a honeycomb—empty space mixed with thin, strong beams. Unlike solid 3D-printed parts, lattices use material only where it’s needed. This balance makes them light but surprisingly tough.

Key Terms to Know

To talk about lattices confidently, learn these simple terms. They’ll help you understand every part of this guide:

• Struts: Thin, rod-like pieces that form the lattice’s frame. Their thickness, length, and angle change how strong the part is.
• Nodes: The points where struts connect. Stronger nodes (bigger or rounder) make the lattice more durable.
• Unit Cell: The repeating “building block” of the lattice. Common shapes are cubes, hexagons, or gyroids (twisted, organic patterns).
• Relative Density: The % of the lattice that’s solid material (vs. empty space). A 10% density means 90% is air—why lattices are so light.

A Simple Visual Example

Imagine you’re 3D printing a bracket for a drone. A solid bracket would be heavy. It would add weight to the drone, cutting its flight time. It would also use a lot of plastic.

A lattice bracket, though, has a grid inside. Struts go where the bracket needs to hold weight—like the corners. Empty space cuts weight. The result? A bracket 50% lighter than the solid one, but just as strong. Perfect for keeping drones flying longer.

Why Use Lattice Structure AM?

Lattices aren’t just a cool design trick. They solve real problems for designers, engineers, and businesses. Below are the 5 biggest benefits, with real cases and data to back them up.

Lightweight but Strong?

This is the top benefit of lattice structures. By replacing solid material with a grid, you can cut a part’s weight by 30-70%. But because struts are placed strategically, the part still handles stress well. This is a game-changer for industries where weight counts.

Case Study: Airbus A350 XWB Bracket – Airbus used lattice AM to make a bracket for its A350 XWB plane. The original solid bracket weighed 700 grams. The lattice version? Just 300 grams. That’s a 57% weight cut. Multiply that by hundreds of brackets per plane, and fuel costs drop a lot. Tests showed the lattice bracket was just as strong as the solid one, meeting Airbus’s strict safety rules.

Less Material, Less Waste?

Additive manufacturing is already more eco-friendly than traditional methods. It builds parts layer by layer, not by cutting away material. Lattices take this further: they use less material, so you waste less and save on raw material costs.

Data Point – A 2024 study by the Additive Manufacturing Research Center found lattice parts use 40-60% less material than solid 3D-printed parts. For a company printing 1,000 plastic parts a month, that’s $500-$1,000 in material savings each month.

Better Insulation?

The empty space in lattices acts as a buffer. This makes them great for parts that need to block heat or sound. A lattice heat shield in a car engine can keep heat away from other parts. A lattice interior panel can cut road noise in a vehicle.

Example: Ford EV Door Panels – Ford tested lattice door panels for its electric vehicles (EVs). The lattice panels cut road noise by 15% compared to solid ones. They also weighed 20% less, helping the EV’s battery go further on a charge.

Controlled Flexibility?

Solid parts either bend or break. Lattices let you “tune” how a part acts. Adjust strut thickness, unit cell shape, or relative density to make a part flexible (like a shoe sole) or rigid (like a machine bracket). They also absorb shock well—think helmet liners.

Real-World Use: Adidas 4DFWD Shoes – Adidas’s 4DFWD running shoes have lattice midsoles. They’re 3D-printed with a hexagonal unit cell. The lattice compresses when you step (absorbing shock) and springs back (giving extra push). Runners say they get 15% more energy return than with traditional foam midsoles—all from the lattice design.

Easy Customization?

Every part has a unique job. Lattices let you customize the design to fit that job. For example, a medical implant (like a hip cup) can be dense around the edges (for strength) and less dense in the center (to let bone grow into it). This level of customization is impossible with solid parts.

Healthcare Example: Zimmer Biomet Hip Implant – Zimmer Biomet, a medical device company, makes lattice hip implants. The lattice has 60% relative density at the edges (to attach to the pelvis) and 20% in the center (to encourage bone growth). Studies show patients with these implants recover 25% faster than those with solid implants—because bone integrates with the lattice quicker.

How to Design Lattice Structures?

Designing a lattice isn’t just adding a grid to a 3D model. You need to think about the part’s purpose, material, and how it will be printed. Follow these steps to get it right.

Step 1: Define the Goal

First, ask: What does the part need to do? Will it bear weight? Absorb shock? Insulate heat? This shapes every design choice. For example:

• Strong, light parts (aerospace brackets): Use cubic or octahedral unit cells (stiff and efficient).
• Shock absorption (helmet liners): Use hexagonal or gyroid unit cells (compress easily, spring back).

Step 2: Choose the Unit Cell

The unit cell is the lattice’s repeat pattern. Different shapes have different properties. Use this table to pick the right one:

Step 3: Adjust Density & Struts

Relative density and strut thickness affect weight and strength. Here’s a simple rule:

• Higher density (50%): Stronger, heavier (good for load-bearing parts).
• Lower density (10%): Lighter, more flexible (good for insulation).

Pro Tip – Use simulation software (ANSYS, Autodesk Fusion 360) to test your design. These tools let you stress-test the lattice virtually. You can see where it bends or breaks and adjust before printing. This saves time and material.

Step 4: Pick Material & Printing Method

Not all materials or 3D printing methods work for lattices. Here’s what to consider:

• Materials: Metals (titanium, aluminum) or high-strength plastics (nylon) for strong lattices. PLA or TPU (flexible plastic) for low-cost, flexible lattices.
• Printing Methods: SLS (Selective Laser Sintering) is best—it prints small struts without supports. FDM works for simple lattices but needs supports (hard to remove).

Example – A bike seat post designer would choose nylon (strong, light) and SLS printing (clean, support-free struts). FDM would leave hard-to-remove supports inside the lattice, ruining the part.

Which Industries Use Lattice AM?

Lattices are versatile. They shine in industries where weight, strength, and customization matter most. Below are the 4 key sectors where they’re making the biggest impact.

Aerospace & Defense?

Aerospace companies care about weight (every gram cuts fuel costs) and strength (strict safety rules). Lattices check both boxes.

Case Study: Boeing 787 Duct – Boeing used lattice AM to make a duct for its 787 Dreamliner. The original solid duct weighed 2.2 pounds. The lattice version? 0.8 pounds (64% reduction). It also insulates better, keeping the cabin temperature stable. Boeing saves $100,000 in fuel per plane per year.

Common Uses: Engine brackets, ducting, satellite parts, interior panels.

Healthcare?

In healthcare, lattices let doctors make implants that match a patient’s body exactly. They also let natural tissue integrate with the implant.

Case Study: Custom Jaw Implant – A German patient needed a jaw implant after cancer. Doctors used CT scans to design a titanium lattice implant (30% density). Bone grew into the struts. Surgery took 2 hours (half the time of traditional implants), and the patient ate solid food in 3 weeks.

Common Uses: Hip implants, jaw implants, dental crowns, prosthetic limbs.

Automotive?

Car makers use lattices to cut weight (better fuel efficiency for gas cars, longer range for EVs) and improve safety (shock absorption).

Data Point – A 2023 Automotive Additive Manufacturing Association report found 60% of EV makers use lattice parts. Tesla uses lattice battery housings in the Model Y—40% lighter than solid ones and better at absorbing crash impact.

Common Uses: Battery housings, door panels, bumpers, seat frames.

Sports & Recreation?

Sports gear needs to be light (speed), strong (durability), and flexible (performance). Lattices deliver all three.

Case Study: Wilson Tennis Racket – Wilson used lattice AM to make a tennis racket frame. The gyroid lattice makes it 20% lighter than traditional frames. It also dampens vibration—players have less arm fatigue. Pros said it improved their swing speed by 5%.

Common Uses: Tennis rackets, shoe midsoles, helmet liners, bike parts.

How to write a spec that gets priced correctly

A drawing is a contract. If it leaves a number open, the shop fills that number in with its own default. The default is rarely the one you had in mind. Put these five lines on every RFQ and most of the back-and-forth disappears before it starts.

• File format and units, with the model exported in millimetres
• Process and material grade, not a trade name
• Critical features and the tolerance each one needs
• Surface finish and the faces it applies to
• Quantity for the pilot build and for the year

The point is not paperwork. Each line removes a decision the shop would otherwise make for you. A complete RFQ comes back priced. An incomplete one comes back guessed.

What actually drives the price

Buyers usually push on material because it is the line they can see. In practice the material is rarely the biggest number on a quote. These five lines decide most of it:

• build volume and orientation
• layer height and support structure
• material grade and colour
• post-processing and hand finishing
• quantity per build plate

Ask for the quote split by line. A supplier who cannot break it down is guessing, and you will pay for the guess. The line you can usually renegotiate is the tolerance band, not the raw material.

Problems you will meet, and the fix

Every process has a failure mode it prefers. The same four show up again and again on this kind of work, and none of them are mysteries once you know what to look for.

• Warping on long flat faces where the part lifts off the plate
• Layer lines showing through a cosmetic surface
• Support scars on a mating face nobody flagged
• Dimensional drift on thin walls after cooling

Catch the fault on the first part, not the hundredth. A first-article check costs an hour. A bad batch costs the whole order. Write the check into the purchase order so nobody has to remember it.

What Challenges Come With Lattice AM?

Lattices have big benefits, but they aren’t perfect. Knowing these challenges will help you avoid mistakes and get the best results.

Design Complexity?

Designing lattices isn’t simple. You need to optimize unit cells, strut thickness, and density. This often needs simulation software, which can cost $1,000-$5,000 per year. Small businesses or hobbyists may struggle with this.

Solution – Tools like Autodesk Netfabb have built-in lattice design features. They auto-generate lattices and run basic simulations—no advanced degree needed. Many offer free trials.

Printing Troubles?

Lattices have small, intricate struts. This makes printing hard. FDM needs supports for overhanging struts, but removing them from small spaces can break struts. SLS doesn’t need supports, but struts thinner than 0.2mm may not fuse properly.

Solution – Use SLS for complex lattices (precise, no supports). For FDM, use thicker struts (0.5mm+). Work with a 3D printing service that knows lattices—they can adjust settings for better results.

High-Volume Cost?

Lattices are great for small batches or custom parts. But they print slower than solid parts (each strut is printed individually). For high-volume production (10,000 shoe midsoles), they’re more expensive.

Data Point – A 2024 Deloitte cost analysis found lattice parts cost 20-30% more for high volumes than solid 3D-printed parts. For small batches (100 or less), the cost difference is minimal.

Solution – Use lattices for small batches or custom parts. For high volumes, use hybrid designs: lattice inside, solid outer layer. This cuts printing time while still reducing weight.

Quality Control?

Keeping lattice parts consistent (same strut thickness, density) is hard. Small changes in printer temp or material quality can make parts weaker. This is critical for healthcare or aerospace, where failure is dangerous.

Solution – Use in-process monitoring tools (cameras, sensors) to track printing in real time. They detect issues and stop prints early. Follow ASTM International standards for testing lattice parts.

Lattice structure additive manufacturing is more than a trend—it’s a tool that changes how we make 3D-printed parts. It lets us create parts that are lighter, stronger, and more efficient than solid alternatives. By using material only where it’s needed, lattices cut waste, save costs, and open up new design possibilities.

Whether you’re in aerospace, healthcare, automotive, or sports, lattices can solve your biggest part challenges. They let you customize parts to fit exact needs, improve performance, and even speed up recovery (in healthcare). Yes, there are challenges—design complexity, printing troubles, cost—but simple solutions exist to overcome them.

As 3D printing technology gets better, lattices will become even more accessible and affordable. Now is the time to learn how to use them. By following the steps in this guide, you can start designing lattice parts that work better, cost less, and stand out from the competition.

Our solution for Lattice Structure Additive Manufacturing

YiguProto runs 3D printing in house, from a single prototype to a production batch. We quote the process, the material and the finish as separate lines, so you can see where the money goes instead of arguing with one number.

Send a STEP file or a drawing and you get a DFM report in one to two business days. It flags the features that add cost and the features that will not hold tolerance on the process you picked.

Every order ships with an inspection report on the features you call out. If a part misses, we make it again. Ready to price a part? Start with a free quote and DFM review, or read more about our 3D printing. You can also talk to an engineer before you commit to a drawing.

FAQ about Lattice Structure Additive Manufacturing

The short version

Lattice Structure Additive Manufacturing rewards the buyer who reads the data sheet and the drawing together. Pick the option for the property that matters, not for the price per kilo.

Tighten only what mates. Test a sample before the run. Then let the process do the rest.